RPI (ratings percentage index) is a rating that applies to a team's record and schedule such that the stronger the opponents, the higher the RPI rating. Conversely, the weaker the opponents, the lower the RPI rating. In order to tabulate an RPI rating, each opponent's strength has to be evaluated by examining its W-L record as well as the W-L record of its opponents.

Note that the .545 is not based on 34/60 (.567) but on the average of each opponent's percentage in the right-hand column.

The records for each opponent's opponents are

Team A 42 18 .750 - based on average of all of a team's opponents Team B 22 24 .502 and not based on total wins / total games Team C 18 18 .483 Team D 32 22 .600 Team E 30 31 .530 Team F 29 15 .624 Team G 37 16 .645 Team H 39 27 .615 --- -- 249 171 .594

Note that the .594 opponent-opponent figure above is not based on 249/(249+171) but rather is the average of the percentages in the last column.